Abstract: In a method for producing a ring-shaped formed part, by means of a forming device first of all a ring of smaller cross-sectional dimensions than the formed part being produced is formed from a blank in various forming stages. The ring is then expanded to the cross-sectional dimensions of the formed part being produced. The expansion of the ring is effected in an expansion stage of the forming device by means of a die and an expansion punch, where the ring is arranged in the die and the expansion punch is pressed into the ring in the axial direction and thereby expands the ring. The expansion of the ring is effected in two or more steps. In that way, excessive material stresses and any resulting material damage can be avoided.

Abstract: In order to produce a formed part furnished with a through hole, a rod material is advanced by a defined length in the direction of its lengthwise extension into a forming die through a stationary guide and then immobilised by a clamping arrangement that engages with it circumferentially. The end portion of the rod material is then axially swaged by a swaging tool and is thus shaped into a disc, the circumference of which is defined by the forming die. The disc is then penetrated axially by a dishing tool and impact extruded at the same time, the displaced material flowing between the dishing tool and the inner circumferential wall of the forming die. The formed part located in the forming die is then rotated coaxially relative to the rest of the rod material and thereby separated from the rest of the rod material by torsion shearing.

Abstract: In order to produce a formed part furnished with a through hole, a rod material is advanced by a defined length in the direction of its lengthwise extension into a forming die through a stationary guide and then immobilised by a clamping arrangement that engages with it circumferentially. The end portion of the rod material is then axially swaged by a swaging tool and is thus shaped into a disc, the circumference of which is defined by the forming die. The disc is then penetrated axially by a dishing tool and impact extruded at the same time, the displaced material flowing between the dishing tool and the inner circumferential wall of the forming die. The formed part located in the forming die is then rotated coaxially relative to the rest of the rod material and thereby separated from the rest of the rod material by torsion shearing.

Abstract: A forming machine comprises a shearing device for shearing off a section of a bar stock, a forming station for forming the sheared off bar stock section and a transport device for the bar stock. The shearing device has two shearing blades, of which one is movable transverse to the longitudinal extension of the bar stock. The shearing blades each have an assembly block and a shearing insert attached to this. For one of the shearing blades, the shearing insert is made of a heat-resistant, break-proof and thermal shock-resistant hard material and essentially has the form of a cylindrical half-shell. This shearing insert is arranged in a reception recess of the assembly block, which is adapted in shape, and is releasably clamped to the assembly block by means of screwed clamping blocks.